A surgeon disputed a colleague's claim to have contracted AIDS from being squirted in the face with blood during an operation they performed.

Dr. William Knapper, senior surgeon during the 1983 operation in which Dr. Rudolph Almaraz said he was exposed to AIDS, denied any such accident took place but acknowledged not remembering specifics of the surgery or Almaraz himself.Almaraz, a breast cancer surgeon at Johns Hopkins Hospital, died of AIDS on Nov. 16 at age 41, never having told the hospital or his patients of his disease.